diff --git a/w3vm/vm.go b/w3vm/vm.go
index 6d205bc6..b89875e2 100644
--- a/w3vm/vm.go
+++ b/w3vm/vm.go
@@ -25,8 +25,8 @@ var (
 	big1               = big.NewInt(1)
 	pendingBlockNumber = big.NewInt(-1)
 
-	ErrFetch  = errors.New("fetch error")
-	ErrRevert = errors.New("revert error")
+	ErrFetch  = errors.New("fetching failed")
+	ErrRevert = errors.New("execution reverted")
 )
 
 type VM struct {
@@ -173,9 +173,9 @@ func (v *VM) apply(msg *w3types.Message, isCall bool, tracer vm.EVMLogger) (*Rec
 
 	if err := result.Err; err != nil {
 		if reason, unpackErr := abi.UnpackRevert(result.ReturnData); unpackErr != nil {
-			receipt.Err = err
+			receipt.Err = ErrRevert
 		} else {
-			receipt.Err = fmt.Errorf("%w: %s", err, reason)
+			receipt.Err = fmt.Errorf("%w: %s", ErrRevert, reason)
 		}
 	}
 	if msg.To == nil {
diff --git a/w3vm/vm_test.go b/w3vm/vm_test.go
index e00cdb83..9adffd05 100644
--- a/w3vm/vm_test.go
+++ b/w3vm/vm_test.go
@@ -263,25 +263,25 @@ func TestVM_Fetcher(t *testing.T) {
 	}
 
 	_, err = vm.Nonce(addr0)
-	want := "fetch error: failed to fetch nonce of 0x0000000000000000000000000000000000000000"
+	want := "fetching failed: failed to fetch nonce of 0x0000000000000000000000000000000000000000"
 	if !errors.Is(err, w3vm.ErrFetch) || want != err.Error() {
 		t.Errorf("Nonce: want %q, got %q", want, err)
 	}
 
 	_, err = vm.Balance(addr0)
-	want = "fetch error: failed to fetch balance of 0x0000000000000000000000000000000000000000"
+	want = "fetching failed: failed to fetch balance of 0x0000000000000000000000000000000000000000"
 	if !errors.Is(err, w3vm.ErrFetch) || want != err.Error() {
 		t.Errorf("Balance: want %q, got %q", want, err)
 	}
 
 	_, err = vm.Code(addr0)
-	want = "fetch error: failed to fetch code of 0x0000000000000000000000000000000000000000"
+	want = "fetching failed: failed to fetch code of 0x0000000000000000000000000000000000000000"
 	if !errors.Is(err, w3vm.ErrFetch) || want != err.Error() {
 		t.Errorf("Code: want %q, got %q", want, err)
 	}
 
 	_, err = vm.StorageAt(addr0, common.Hash{})
-	want = "fetch error: failed to fetch storage of 0x0000000000000000000000000000000000000000 at 0x0000000000000000000000000000000000000000000000000000000000000000"
+	want = "fetching failed: failed to fetch storage of 0x0000000000000000000000000000000000000000 at 0x0000000000000000000000000000000000000000000000000000000000000000"
 	if !errors.Is(err, w3vm.ErrFetch) || want != err.Error() {
 		t.Errorf("StorageAt: want %q, got %q", want, err)
 	}